Map of World Time Zones | World Time Zone Map

The World Time Zone Map is divided into 24 time zones, one for each hour of the day. Time zones are based on the Earth’s rotation, which causes the sun to rise and set in different places at different times. The Prime Meridian, which runs through Greenwich, England, is the dividing line between the Eastern and Western Hemispheres and the starting point for the world’s time zones.

Each time zone is one hour ahead of the time zone to the west of it and one hour behind the time zone to the east of it. For example, when it is 10:00 AM in Pacific Time (PT), it is 11:00 AM in Mountain Time (MT), 12:00 PM in Central Time (CT), and 1:00 PM in Eastern Time (ET).

Most countries observe Daylight Saving Time (DST) by setting their clocks forward one hour in the spring and back one hour in the fall. DST is intended to make better use of daylight hours, but it can be disruptive to people’s sleep patterns and have a negative impact on health.

Why Do We Have Time Zones?

The idea of time zones was introduced to address the challenges of coordinating activities across vast distances. Before the concept of time zones, each city or town had its local time based on the position of the sun overhead. This system became impractical with the rise of railroads and telegraph communication, leading to the need for a standardized timekeeping system.

Major Time Zones in World Time Zone Map

Time ZoneUTC OffsetCountries/Regions
UTC-12-12:00Baker Island, Howland Island, International Date Line
UTC-11-11:00American Samoa, Midway Atoll, Niue, Pago Pago, Samoa
UTC-10-10:00Hawaii, Cook Islands, French Polynesia, Tahiti-Moorea
UTC-9-9:00Alaska, Gambier Islands, Pitcairn Islands
UTC-8-8:00Pacific Time (PT), Baja California, Sonora, Yukon
UTC-7-7:00Mountain Time (MT), Alberta, Arizona, Chihuahua, Sinaloa
UTC-6-6:00Central Time (CT), Central America, Saskatchewan
UTC-5-5:00Eastern Time (ET), Colombia, Ecuador, Peru
UTC-4-4:00Atlantic Time (AT), Caribbean, Chile, Paraguay, Venezuela
UTC-3-3:00Newfoundland, Argentina, Brazil, Uruguay
UTC-2-2:00Mid-Atlantic Time (WAT), Greenland, Iceland
UTC-1-1:00Cape Verde, Azores
UTC+0+0:00Western Europe, Coordinated Universal Time (UTC)
UTC+1+1:00Central Europe, West Africa
UTC+2+2:00Eastern Europe, Central Africa, Egypt
UTC+3+3:00East Africa, Arabia, Russia
UTC+4+4:00Gulf Cooperation Council, Armenia, Azerbaijan, Georgia
UTC+5+5:00Pakistan, India, Sri Lanka
UTC+6+6:00Bangladesh, Myanmar, Kazakhstan
UTC+7+7:00Indonesia, Thailand, Vietnam
UTC+8+8:00China, Singapore, Malaysia, Taiwan
UTC+9+9:00Japan, Korea, North Korea
UTC+10+10:00Australia, Papua New Guinea
UTC+11+11:00Solomon Islands, Vanuatu
UTC+12+12:00Fiji, New Zealand, Tuvalu

Map of World Time Zones

Who Introduced Time Zones?

Sir Sandford Fleming, a Canadian railway planner and engineer, is credited with introducing the idea of time zones in the late 19th century. His proposal was adopted at the International Meridian Conference in 1884.

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